WO2023197936A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2023197936A1
WO2023197936A1 PCT/CN2023/086680 CN2023086680W WO2023197936A1 WO 2023197936 A1 WO2023197936 A1 WO 2023197936A1 CN 2023086680 W CN2023086680 W CN 2023086680W WO 2023197936 A1 WO2023197936 A1 WO 2023197936A1
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WO
WIPO (PCT)
Prior art keywords
switching
frequency bands
type
terminal device
frequency
Prior art date
Application number
PCT/CN2023/086680
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English (en)
Chinese (zh)
Inventor
翟邦昭
丁梦颖
王�锋
彭金磷
Original Assignee
华为技术有限公司
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Publication of WO2023197936A1 publication Critical patent/WO2023197936A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/364—Delay profiles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • the present application relates to the field of communication technology, and in particular, to a communication method and device.
  • wireless communication systems In order to meet the growing demand for wireless transmission, wireless communication systems require larger transmission bandwidth to increase the transmission rate of wireless networks.
  • wireless communication systems are evolving from single-band wireless communication systems in the past to multi-band wireless communication systems.
  • terminal devices In multi-band wireless communication systems, terminal devices can communicate with network devices on multiple frequency bands.
  • the present application provides a communication method and device, which are used to enable a terminal device to report to a network device at least one switching delay corresponding to a radio frequency link switching between multiple frequency bands, so that the terminal device and the network device can be based on at least one switching delay. Switching delay for communication.
  • embodiments of the present application provide a communication method.
  • the method can be applied to a terminal device or a module in the terminal device.
  • the terminal device sends a third message to the network device.
  • An indication information indicates at least one switching delay, and the at least one switching delay corresponds to at least one switching type in which the radio frequency link of the terminal device switches between multiple frequency bands; furthermore, the terminal The device may communicate with the network device based on the at least one switching delay.
  • the terminal device can report at least one switching delay to the network device, so that the terminal device and the network device can communicate based on at least one switching delay. Furthermore, since the terminal device can report handover delays corresponding to different handover types to the network device according to the handover type, signaling overhead can be effectively saved while reporting handover delays.
  • switching the radio frequency link of the terminal device between multiple frequency bands means that the radio frequency link of the terminal device involves switching of at least three frequency bands before and after the switching.
  • the multiple frequency bands are frequency bands supported by the terminal device; or, the multiple frequency bands are frequency bands included in one of multiple frequency band combinations supported by the terminal device. , wherein each of the plurality of frequency band combinations includes at least three frequency bands among the frequency bands supported by the terminal device.
  • the at least one switching type is determined based on at least one of the following: the frequency band before switching; the frequency band after switching; the number of frequency bands before switching; and the number of frequency bands after switching.
  • the at least one switching type includes one or more of the following: a first switching type, The number of frequency bands before switching corresponding to the first switching type is smaller than the number of frequency bands after switching, and the frequency bands before switching and the frequency bands after switching are completely different; for the second switching type, the number of frequency bands before switching corresponding to the second switching type is The number of frequency bands is greater than the number of frequency bands after switching, and the frequency bands before switching and the frequency bands after switching are completely different; the third switching type, the number of frequency bands before switching corresponding to the third switching type is equal to the number of frequency bands after switching number, and the frequency bands before switching and the frequency bands after switching are completely different; the fourth switching type, the number of frequency bands before switching corresponding to the fourth switching type is equal to the number of frequency bands after switching, and the frequency bands before switching and the frequency bands after switching
  • the frequency bands include at least one identical frequency band.
  • the first indication information includes the at least one handover delay; or the first indication information includes an identification of the at least one handover type; or the first indication
  • the information includes a handover delay reference value, and the handover delay reference value is used to determine the at least one handover delay. In this case, signaling overhead can be effectively saved.
  • the method further includes: sending second indication information to the network device, where the second indication information includes identifiers of M frequency bands, identifiers of N frequency bands, and the radio frequency link from The first switching delay corresponding to the switching of the M frequency bands to the N frequency bands, M and N are both integers greater than or equal to 1; the radio frequency link switches from the M frequency bands to the N frequency bands
  • the corresponding switching type belongs to the at least one switching type, and the first switching delay is different from the switching delay corresponding to the switching type.
  • the terminal device can also report the handover delay corresponding to the special handover to the network device through the second instruction information, the accuracy of the handover delay reported by the terminal device can be effectively ensured.
  • embodiments of the present application provide a communication method, which can be applied to a network device or a module in the network device.
  • the network device receives the first indication information from the terminal device,
  • the first indication information indicates at least one switching delay, and the at least one switching delay corresponds to at least one switching type in which the radio frequency link of the terminal device switches between multiple frequency bands; furthermore, the network device can be based on the The at least one switching delay is used to communicate with the terminal device.
  • the at least one switching type is determined based on at least one of the following: the frequency band before switching; the frequency band after switching; the number of frequency bands before switching; and the number of frequency bands after switching.
  • the at least one switching type includes one or more of the following: a first switching type, the number of frequency bands before switching corresponding to the first switching type is smaller than the number of frequency bands after switching, And the frequency band before switching and the frequency band after switching are completely different; the second switching type, the number of frequency bands before switching corresponding to the second switching type is greater than the number of frequency bands after switching, and the frequency band before switching and the frequency band after switching Completely different; the third switching type, the number of frequency bands before switching corresponding to the third switching type is equal to the number of frequency bands after switching, and the frequency bands before switching and the frequency bands after switching are completely different; the fourth switching type, the The number of frequency bands before switching corresponding to the fourth switching type is equal to the number of frequency bands after switching, and the frequency band before switching and the frequency band after switching include at least one same frequency band.
  • the first indication information includes the at least one handover delay; or the first indication information includes an identification of the at least one handover type; or the first indication
  • the information includes a switching delay reference value, the switching delay reference value being used to determine the at least one switching delay.
  • the method further includes: receiving second indication information from the terminal device, where the second indication information includes identifiers of M frequency bands before switching and identifiers of N frequency bands after switching.
  • the first switching delay corresponding to the radio frequency link switching from the M frequency bands to the N frequency bands, M and N are both integers greater than or equal to 1; the radio frequency link switches from the M frequency bands to The switching type corresponding to the N frequency bands belongs to the at least one switching type, and the first switching delay is different from the switching delay corresponding to the switching type.
  • the present application provides a communication device.
  • the communication device has the function of implementing the first aspect.
  • the communication device includes modules or units or means (means) corresponding to performing operations related to the first aspect.
  • the module or unit or means can be implemented by software, or implemented by hardware, or can also be implemented by hardware executing corresponding software.
  • the communication device includes a processing unit and a communication unit, where the communication unit can be used to send and receive signals to implement communication between the communication device and other devices; the processing unit can be used to perform the communication Some internal operations of the device.
  • the functions performed by the processing unit and the communication unit may correspond to the operations related to the above-mentioned first aspect.
  • the communication device includes a processor, and the processor can be coupled to a memory.
  • the memory may store necessary computer programs or instructions to implement the functions involved in the first aspect.
  • the processor can execute the computer program or instructions stored in the memory. When the computer program or instructions are executed, the communication device implements the method in any possible design or implementation manner in the above-mentioned first aspect.
  • the communication device includes a processor and a memory, and the memory can store the necessary computer programs or instructions to implement the functions involved in the first aspect.
  • the processor can execute the computer program or instructions stored in the memory.
  • the communication device implements the method in any possible design or implementation manner in the above-mentioned first aspect.
  • the communication device includes a processor and an interface circuit, wherein the processor is configured to communicate with other devices through the interface circuit and perform any of the possible designs or implementations in the first aspect. method.
  • the present application provides a communication device.
  • the communication device is capable of implementing the functions related to the second aspect.
  • the communication device includes modules or units or means corresponding to performing operations related to the second aspect, so The above-mentioned functions, units or means can be realized by software, or by hardware, or by hardware executing corresponding software.
  • the communication device includes a processing unit and a communication unit, where the communication unit can be used to send and receive signals to implement communication between the communication device and other devices.
  • the communication unit is used to send messages to a terminal.
  • the device sends system information; the processing unit may be used to perform some internal operations of the communication device.
  • the functions performed by the processing unit and the communication unit may correspond to the operations related to the above-mentioned second aspect.
  • the communication device includes a processor, and the processor can be coupled to a memory.
  • the memory may store necessary computer programs or instructions to implement the functions related to the second aspect above.
  • the processor can execute the computer program or instructions stored in the memory. When the computer program or instructions are executed, the communication device implements the method in any possible design or implementation of the second aspect.
  • the communication device includes a processor and a memory, and the memory can store the necessary computer programs or instructions to implement the functions involved in the second aspect.
  • the processor can execute the computer program or instructions stored in the memory. When the computer program or instructions are executed, the communication device implements the method in any possible design or implementation of the second aspect.
  • the communication device includes a processor and an interface circuit, wherein the processor is configured to communicate with other devices through the interface circuit and execute the method in any possible design or implementation of the second aspect.
  • the processor can be implemented by hardware or software.
  • the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, Reality Now, the processor may be a general-purpose processor, implemented by reading software code stored in memory.
  • the above processors may be one or more, and the memories may be one or more.
  • the memory can be integrated with the processor, or the memory can be provided separately from the processor. During the specific implementation process, the memory and the processor can be integrated on the same chip, or they can be respectively provided on different chips. The embodiments of this application do not limit the type of memory and the arrangement method of the memory and the processor.
  • the present application provides a communication system, which may include the communication device provided in the third aspect and the communication device provided in the fourth aspect.
  • the present application provides a computer-readable storage medium.
  • Computer-readable instructions are stored in the computer storage medium.
  • the computer reads and executes the computer-readable instructions, the computer is caused to execute the above-mentioned first aspect or Methods in any possible design of the second aspect.
  • the present application provides a computer program product, which when a computer reads and executes the computer program product, causes the computer to execute the method in any possible design of the first aspect or the second aspect.
  • the present application provides a chip.
  • the chip includes a processor.
  • the processor is coupled to a memory and is used to read and execute a software program stored in the memory to implement the first aspect or the second aspect. any possible design approach.
  • Figure 1 is a schematic diagram of a network architecture applicable to the embodiment of the present application.
  • FIG. 2 is a schematic diagram of a switching type provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of another switching type provided by the embodiment of the present application.
  • Figure 4 is a schematic flow chart corresponding to the communication method provided by the embodiment of the present application.
  • Figure 5 is a possible exemplary block diagram of the device involved in the embodiment of the present application.
  • Figure 6 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • Figure 1 is a schematic diagram of a communication system applicable to the embodiment of the present application.
  • the communication system may include one or more network devices (such as network device 101) and one or more terminal devices (such as terminal device 1021, terminal device 1022, and terminal device 1023).
  • the network device 101 and the terminal device 1021, the terminal device 1022 or the terminal device 1023 can communicate through air interface resources, and optionally, different terminal devices can also communicate through sidelink (SL) resources.
  • SL sidelink
  • a network device may support a single frequency band, or may support multiple frequency bands. The coverage of different/same frequency bands of different network devices may be different, which may be related to the transmission power of the network device, deployment method, frequency size of the band, etc.
  • a terminal device may be covered by one or more frequency bands of one or more network devices.
  • the terminal device can operate according to carrier aggregation (CA), dual connectivity (dual connectivity) , DC) and other transmission technologies.
  • CA carrier aggregation
  • DC dual connectivity
  • the number of CA frequency bands that different terminal equipment can simultaneously support may be different, which may be related to the radio frequency and baseband processing capabilities of the terminal equipment.
  • the embodiments of the present application do not limit the number of network devices and terminal devices included in the communication system.
  • the above communication system may also include other devices or network elements, such as core network devices. etc., the embodiments of the present application are not limited to this.
  • the terminal equipment involved in the embodiments of this application is also called user equipment (UE), mobile station (MS), mobile terminal (MT), etc., and refers to providing voice and/or data to users.
  • Connectivity devices For example, handheld devices, vehicle-mounted devices, etc. with wireless connection capabilities.
  • some examples of terminal devices are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (Augmented reality) , AR) equipment, wireless terminals in industrial control, wireless terminals in driverless driving, wireless terminals in remote surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, smart homes Wireless terminals in etc.
  • the device for realizing the function of the terminal device may be a terminal device; it may also be a device that can support the terminal device to realize the function, such as a chip system, and the device may be installed in the terminal device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the network device involved in the embodiment of this application may be a base station (BS), and the BS may be a device deployed in a wireless access network that can communicate wirelessly with terminals.
  • base stations may come in many forms, such as macro base stations, micro base stations, relay stations, and access points.
  • the network equipment involved in the embodiments of this application may be a next-generation Node B (gNB), a transmission reception point (TRP), an evolved Node B (eNB) )wait.
  • network devices may include centralized unit (CU) nodes and distributed unit (DU) nodes.
  • CU implements some functions of network equipment
  • DU implements some functions of network equipment.
  • the CU is responsible for processing non-real-time protocols and services, implementing radio resource control (RRC), and packet data convergence protocol (PDCP) layer functions.
  • DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, media access control (MAC) layer and physical (physical, PHY) layer.
  • RLC radio link control
  • MAC media access control
  • PHY physical (physical, PHY) layer.
  • the device used to implement the function of the network device may be a network device; it may also be a device that can support the network device to implement the function, such as a chip system, and the device may be installed in the network device.
  • the device for realizing the functions of the network device is a network device, and the network device is a base station as an example to describe the technical solution provided by the embodiment of the present application.
  • the communication system shown in Figure 1 above can support various wireless access technologies (radio access technology, RAT).
  • the communication system shown in Figure 1 can be a fourth generation (4th generation, 4G) communication system.
  • 4G fourth generation
  • LTE long term evolution
  • 5G also known as new radio (NR) communication system
  • future-oriented evolution system Evolution
  • LTE long term evolution
  • NR new radio
  • the communication system and business scenarios described in the embodiments of this application are for the purpose of explaining the technical solutions of the embodiments of this application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of this application.
  • Those of ordinary skill in the art will know that with the communication With the evolution of the system and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.
  • Radio frequency links can be divided into transmit (Transmit, Tx) radio frequency links and receive (Receive, Rx) radio frequency links.
  • the terminal equipment may include one or more Tx radio frequency links, and the terminal equipment may send radio frequency signals to the network device through one or more Tx radio frequency links; the terminal equipment may also include one or more Rx radio frequency links, and thus end devices can receive RF signals from network devices through one or more Rx RF links.
  • the radio frequency link involved in the embodiments of this application below may be replaced by a Tx radio frequency link, or may also be replaced by an Rx radio frequency link.
  • a radio frequency link may also be called a radio frequency channel or radio frequency module, or other possible names, without specific limitations.
  • the Tx radio frequency link may include one or more radio frequency devices such as upconverters, phase-locked loops, power amplifiers, and mixers.
  • the frequency band may refer to a frequency range or a frequency range.
  • a frequency band may refer to a carrier; alternatively, a frequency band may refer to a frequency band (band) allocated in the 3rd generation partnership project (3GPP) agreement, such as n1, n2, n41 , n78, etc.
  • 3GPP 3rd generation partnership project
  • n1, n2, n41, n78, etc. can be understood as identification of frequency bands.
  • Each frequency band corresponds to a preset frequency range.
  • the frequency band identified by n41 includes 2496MHz-2690MHz (here, the upstream frequency range is taken as an example).
  • a terminal device can support multiple frequency bands or there can be multiple frequency bands that provide services to the terminal device, and the terminal device can communicate with network devices on multiple frequency bands.
  • a terminal device can access a network device and communicate with the network device on multiple frequency bands through CA technology.
  • a terminal device can access two network devices at the same time and communicate with the two network devices on multiple frequency bands through DC technology.
  • one frequency band can correspond to one Tx radio frequency link, or it can correspond to multiple Tx radio frequency links; that is, the terminal device can send radio frequencies to the network device through one Tx radio frequency link on one frequency band. signals, or RF signals can be sent to network devices through multiple Tx RF links on one frequency band.
  • a frequency band can correspond to one Rx radio frequency link, or it can correspond to multiple Rx radio frequency links; that is, the terminal device can receive radio frequency signals from network devices through one Rx radio frequency link on one frequency band, or it can also RF signals from network devices are received through multiple Rx RF links on one frequency band.
  • a RF link (such as a Tx RF link or an Rx RF link) can operate on different frequency bands at different times.
  • the terminal device may include one or more Tx radio frequency links.
  • the Tx radio frequency link of the terminal device can have multiple possible states. Some possible states of the Tx radio frequency link of the terminal device are described below in conjunction with Scenarios 1 to 3.
  • the number of Tx radio frequency links of the terminal equipment is equal to the number of frequency bands supported by the terminal equipment.
  • a link can include three states as shown in Table 1.
  • Table 1 Status of the Tx RF link of the terminal device
  • state 1 means that one of the two radio frequency links, the Tx radio frequency link, operates in frequency band A, and the other Tx radio frequency link operates in frequency band B.
  • state 2 means that both Tx radio frequency links work in frequency band B.
  • state 3 means that both Tx radio frequency links work in frequency band A.
  • the number of Tx radio frequency links of the terminal equipment is less than the number of frequency bands supported by the terminal equipment.
  • the Tx RF link can include six states as shown in Table 2.
  • Table 2 Status of Tx radio frequency link of terminal equipment
  • state 1 means that both Tx radio frequency links operate in frequency band A.
  • state 2 means that both Tx radio frequency links work in frequency band B.
  • state 3 means that both Tx radio frequency links operate in frequency band C.
  • state 4 means that one of the two Tx radio frequency links operates in frequency band A, and the other Tx radio frequency link operates in frequency band B.
  • state 5 means that one of the two Tx radio frequency links operates in frequency band A, and the other Tx radio frequency link operates in frequency band C.
  • state 6 means that one of the two Tx radio frequency links operates in frequency band B, and the other Tx radio frequency link operates in frequency band C.
  • the terminal equipment supports four frequency bands (for example, the four frequency bands are frequency band A, frequency band B, frequency band C and frequency band D), in this case, the number of Tx radio frequency links of the terminal equipment is less than the number of frequency bands supported by the terminal equipment.
  • the Tx radio frequency link of the terminal device can include ten states as shown in Table 3.
  • Table 3 Status of Tx radio frequency link of terminal equipment
  • state 1 means that both Tx radio frequency links operate in frequency band A.
  • State 2 refers to two Tx radio links All operate in frequency band B.
  • State 3 means that both Tx radio frequency links operate in frequency band C.
  • State 4 means that both Tx radio frequency links work in frequency band D.
  • State 5 means that one of the two Tx radio frequency links operates in frequency band A, and the other Tx radio frequency link operates in frequency band B.
  • State 6 means that one of the two Tx radio frequency links operates in frequency band A, and the other Tx radio frequency link operates in frequency band C.
  • State 7 means that one of the two Tx radio frequency links operates in frequency band A, and the other Tx radio frequency link operates in frequency band D.
  • State 8 means that one of the two Tx radio frequency links operates in frequency band B, and the other Tx radio frequency link operates in frequency band C.
  • State 9 means that one of the two Tx radio frequency links operates in frequency band B, and the other Tx radio frequency link operates in frequency band D.
  • State 10 means that one of the two Tx radio frequency links operates in frequency band C, and the other Tx radio frequency link operates in frequency band D.
  • Table 1 illustrate some possible states of the Tx radio frequency link of the terminal equipment; in specific implementation, taking Table 1 as an example, the Tx radio frequency link of the terminal equipment can support
  • the three states in Table 1 may also support some of the three states.
  • the terminal device may support state 1 and state 2 of the three states, but does not support state 3.
  • the above description is based on the example that the number of Tx radio frequency links of the terminal device is equal to or less than the number of frequency bands supported by the terminal device. In other possible situations, the number of Tx radio frequency links of the terminal device can also be greater than the number of frequency bands supported by the terminal device. The number of frequency bands. In this case, please refer to the descriptions of Scenario 1 to Scenario 3 above.
  • radio frequency link such as Tx radio frequency link
  • the Tx radio frequency link of the terminal device can be switched between multiple frequency bands supported by the terminal device.
  • the Tx radio frequency link of the terminal equipment can switch between the three frequency bands (such as switching between the six states shown in Table 2).
  • the Tx radio frequency link of the terminal equipment can switch between the four frequency bands (such as switching between the ten states shown in Table 3). In this way, switching between multiple frequency bands through the Tx radio frequency link allows the terminal device to communicate with the network device on multiple frequency bands.
  • the terminal device can support at least one frequency band combination.
  • Each frequency band combination in the at least one frequency band combination can include at least two of the multiple frequency bands supported by the terminal device. frequency band.
  • the frequency band combination supported by the terminal equipment includes two frequency bands
  • the frequency band involved in the radio frequency link of the terminal equipment before and after the handover includes these two frequency bands
  • the frequency bands involved in the radio frequency link of the terminal equipment before and after the switching may refer to the union of the frequency bands of the radio frequency link of the terminal equipment before and after the switching.
  • the radio frequency link of the terminal device switches between the two frequency bands included in the frequency band combination, which may include: the radio frequency link of the terminal device is in state 2 and state in Table 1 3, or the radio frequency link of the terminal device switches between state 1 and state 2 in Table 2.
  • the radio frequency link of the terminal device switches between the two frequency bands included in the frequency band combination, which may include: the radio frequency link of the terminal device is in states 1 and 2 in Table 2. Switch between state 3, or the radio frequency link of the terminal device switches between state 1 and state 3 in Table 3.
  • the frequency band combination supported by the terminal equipment includes three frequency bands, if the frequency bands involved in the radio frequency link of the terminal equipment before and after the handover include these three frequency bands, it can be considered that the radio frequency link of the terminal equipment is in Switch between the three frequency bands included in this band combination.
  • the radio frequency link of the terminal device switches between the three frequency bands included in the frequency band combination, which may include: The status of the radio frequency link of the terminal device in Table 2 4. Switch between any two states of state 5 and state 6, or the radio frequency link of the terminal device switches between any two states of state 5, state 6 and state 8 in Table 3.
  • the radio frequency link of the terminal device switches between the three frequency bands included in the frequency band combination, which may include: the radio frequency link of the terminal device in Table 3 Switch between any two states among state 5, state 7 and state 9.
  • the frequency band combination supported by the terminal equipment includes four frequency bands, if the frequency bands involved in the radio frequency link of the terminal equipment before and after the handover include these four frequency bands, it can be considered that the radio frequency link of the terminal equipment is in Switch between the four frequency bands included in this band combination.
  • the radio frequency link of the terminal equipment switches between the four frequency bands included in the frequency band combination, which may include:
  • the radio frequency link of the terminal equipment is in Table 3 Switch between state 5 and state 10 in .
  • the radio frequency link of the terminal device can have multiple switching types when switching between multiple frequency bands, and the multiple switching types can be obtained according to a variety of possible division rules.
  • the multiple frequency bands may be frequency bands supported by the terminal device (for example, the multiple frequency bands may refer to all frequency bands supported by the terminal device), or the multiple frequency bands may be frequency bands included in a combination of frequency bands supported by the terminal device.
  • multiple handover types can be determined based on at least one of the following: frequency band before handover; frequency band after handover; number of frequency bands before handover; number of frequency bands after handover. Based on this division rule, two possible division methods are described below in combination with division method 1 and division method 2.
  • the switching of the radio frequency link of the terminal device between multiple frequency bands can be divided as follows Switching type a1 to switching type a6.
  • the number of frequency bands before switching corresponding to switching type a1 is smaller than the number of frequency bands after switching; the frequency band before switching and the frequency band after switching corresponding to switching type a1 are completely different. Among them, the frequency band before switching and the frequency band after switching are completely different. It can be understood that the intersection of the frequency band before switching and the frequency band after switching is empty (that is, there is no intersection).
  • switching type a1 For example, the number of frequency bands corresponding to switching type a1 before switching is 1, and the number of frequency bands after switching is 2, as shown in Figure 2.
  • One possible switching included in switching type a1 is: switching the radio frequency link of the terminal device from frequency band A to frequency band B and frequency band C (for example, switching from state 1 to state 6 in Table 2).
  • the number of frequency bands before switching corresponding to switching type a2 is smaller than the number of frequency bands after switching; the frequency band before switching and the frequency band after switching corresponding to switching type a2 include at least one identical frequency band. Wherein, the frequency band before switching and the frequency band after switching include at least one same frequency band. It can be understood that the frequency band before switching and the frequency band after switching partially overlap or intersect.
  • the number of frequency bands corresponding to switching type a2 is 1 before switching, and the number of frequency bands after switching is 2.
  • one possible switching included in switching type a2 is: the radio frequency link of the terminal device switches from frequency band A to frequency band A and frequency band B (for example, switching from state 3 to state 1 in Table 1).
  • the number of frequency bands before switching corresponding to switching type a3 is greater than the number of frequency bands after switching; the frequency band before switching and the frequency band after switching corresponding to switching type a3 are completely different.
  • the number of frequency bands corresponding to switching type a3 before switching is 2, and the number of frequency bands after switching is 1.
  • one possible switching included in switching type a3 is: the radio frequency link of the terminal device switches from frequency band A and frequency band B to frequency band C (for example, switching from state 4 to state 3 in Table 2).
  • the number of frequency bands before switching corresponding to switching type a4 is greater than the number of frequency bands after switching; the frequency band before switching and the frequency band after switching corresponding to switching type a4 include at least one identical frequency band.
  • the number of frequency bands corresponding to switching type a4 is 2 before switching, and the number of frequency bands after switching is 1.
  • one possible switching included in switching type a4 is: the radio frequency link of the terminal device switches from frequency band A and frequency band B to frequency band A (for example, switching from state 1 to state 3 in Table 1).
  • the number of frequency bands before switching corresponding to switching type a5 is equal to the number of frequency bands after switching; the frequency band before switching and the frequency band after switching corresponding to switching type a5 include at least one identical frequency band.
  • one possible handover included in handover type a5 is: the radio frequency link of the terminal device switches from frequency band A and frequency band B to frequency band A and frequency band C (such as switching from state 4 in Table 2 to state 5).
  • the number of frequency bands before switching corresponding to switching type a6 is equal to the number of frequency bands after switching; the frequency band before switching and the frequency band after switching corresponding to switching type a6 are completely different.
  • one possible handover included in handover type a6 is: the radio frequency link of the terminal device switches from frequency band A and frequency band B to frequency band C and frequency band D (such as switching from state 5 in Table 3 to state 10).
  • switching type a6 switching the radio frequency link of the terminal equipment from frequency band A to frequency band B (such as Switch from state 2 to state 3 in the table).
  • the radio frequency link of the terminal device can be divided into two situations according to the number of frequency bands involved before and after the handover.
  • One situation involves two frequency bands before and after the handover, and the other situation
  • One scenario involves at least three frequency bands before and after handover.
  • the radio frequency chain of the terminal device can be further divided according to the frequency band before switching, the frequency band after switching, the number of frequency bands before switching and the number of frequency bands after switching.
  • the handover of a channel between multiple frequency bands is divided into the following handover type b1 and handover type b2.
  • the number of frequency bands corresponding to switching type b1 is 2 before switching and the number of frequency bands after switching is 1, or the number of frequency bands before switching is 1 and the number of frequency bands after switching is 2.
  • the frequency band before switching and the frequency band after switching corresponding to switching type b1 include at least one identical frequency band.
  • one possible switching included in switching type b1 is: switching the radio frequency link of the terminal device from frequency band A and frequency band B to frequency band A.
  • the number of frequency bands corresponding to switching type b2 is 1 before switching, and the number of frequency bands after switching is 1.
  • Switch type b2 pair The corresponding frequency band before switching and the frequency band after switching are completely different. For example, as shown in Figure 3, one possible switching included in switching type b2 is: switching the radio frequency link of the terminal device from frequency band A to frequency band B.
  • the radio frequency link of the terminal device can be further based on the frequency band before switching, the frequency band after switching, the number of frequency bands before switching, and the number of frequency bands after switching.
  • Handovers between multiple frequency bands are divided into the following handover types b3 to b6.
  • the number of frequency bands before switching corresponding to switching type b3 is smaller than the number of frequency bands after switching.
  • the frequency bands before switching and the frequency bands after switching corresponding to switching type b1 are completely different.
  • the number of frequency bands corresponding to handover type a1 is 1 before handover, and the number of frequency bands after handover is 2.
  • handover type a1 is 1 before handover, and the number of frequency bands after handover is 2.
  • the number of frequency bands before switching corresponding to switching type b4 is greater than the number of frequency bands after switching.
  • the frequency bands before switching and the frequency bands after switching corresponding to switching type b4 are completely different.
  • the number of frequency bands corresponding to handover type a1 is 2 before handover, and the number of frequency bands after handover is 1.
  • the number of frequency bands before switching corresponding to switching type b5 is equal to the number of frequency bands after switching.
  • the frequency band before switching and the frequency band after switching corresponding to switching type b5 include at least one identical frequency band.
  • the number of frequency bands corresponding to handover type a1 is 2 before handover, and the number of frequency bands after handover is 2.
  • the number of frequency bands before switching corresponding to switching type b6 is equal to the number of frequency bands after switching.
  • the frequency bands before switching and the frequency bands after switching corresponding to switching type b6 are completely different.
  • the number of frequency bands before handover type b6 corresponds to 2
  • the number of frequency bands after handover is 2.
  • handover type a6 the difference between handover type b6 and handover type a6 is that the number of frequency bands before handover corresponding to handover type b6
  • the number of frequency bands and the number of frequency bands after switching are greater than 2).
  • switching type b1 and switching type b2 When the terminal device supports three frequency bands, the radio frequency link of the terminal device can switch between the three frequency bands supported by the terminal device (such as switching between the six states shown in Table 2). There are five switching types in total, as follows: Switching type b1 to switching type b5. When the terminal device supports four frequency bands, the radio frequency link of the terminal device can switch between the four frequency bands supported by the terminal device (such as switching between the ten states shown in Table 3). There are six switching types in total, as follows: Switching type b1 to switching type b6.
  • the radio frequency link of the terminal equipment switches between the two frequency bands included in the frequency band combination.
  • the radio frequency link of the terminal equipment can switch between the three frequency bands included in the frequency band combination.
  • Type b5. When the frequency band combination supported by the terminal device includes four frequency bands, the radio frequency link of the terminal device may have a switching type when switching between the three frequency bands included in the frequency band combination, which is switching type b6.
  • the radio frequency link (such as the Tx radio frequency link or the Rx radio frequency link) of the terminal device can be switched between multiple frequency bands.
  • the radio frequency link of the terminal device since a radio frequency link of the terminal device is switched from one frequency band to another frequency band, parameters of one or more radio frequency devices on the radio frequency link need to be reconfigured. in RF devices During parameter reconfiguration, the terminal device cannot send or receive radio frequency signals.
  • the network device communicates with the terminal device within the switching delay caused by the switching (for example, the network device schedules the uplink transmission of the terminal device within the switching delay or Send downlink data to the terminal device), because the terminal device cannot send or receive radio frequency signals within the switching delay, resulting in communication failure.
  • the terminal device reports the switching delay corresponding to the switching of the radio frequency link of the terminal device between different frequency bands to the network device.
  • the network device can determine the switching time according to the switching time. delay, and then communicate with the terminal device after the radio frequency link switching is completed, so that normal communication between the terminal device and the network device can be achieved.
  • Figure 4 is a schematic flowchart corresponding to the communication method provided by the embodiment of the present application. As shown in Figure 4, the process may include:
  • the terminal device sends first indication information to the network device, where the first indication information indicates at least one switching delay.
  • the terminal device may send the first indication information to the network device in multiple ways.
  • the terminal device may send the first indication information to the network device through an RRC message.
  • At least one switching delay indicated by the first indication information may correspond to at least one switching type in which the radio frequency link of the terminal device switches between multiple frequency bands supported by the terminal device.
  • at least one switching type may include at least one of the switching types a1 to a6 described above, or at least one switching type may include the switching types described above. At least one switching type from switching type b1 to switching type b6.
  • the radio frequency link of the terminal device may support switching between all states corresponding to the four frequency bands (such as the ten states shown in Table 3); or , the radio frequency link of the terminal device may also only support switching between some states corresponding to the four frequency bands (such as some of the ten states shown in Table 3).
  • the following takes the example that the terminal device supports four frequency bands and the radio frequency link of the terminal device supports switching between all states corresponding to the four frequency bands. Two possible implementations are described in conjunction with Implementation Mode 1.1 and Implementation Mode 1.2.
  • the terminal device can send the first indication information to the network device, and the first indication information indicates six handover delays corresponding to the six handover types.
  • the handover delay corresponding to the handover type may be determined by the terminal device based on the actual handover delays of different handovers included in the handover type. Since the handover delay corresponding to the terminal equipment's radio frequency link switching between different frequency bands may be related to a variety of factors (such as the specific implementation of the handover, the frequency band before the handover, and the frequency band after the handover), therefore, the same handover type includes The actual handover delays of different handovers may not be exactly the same. For example, switching type b1 includes and hypothesis The corresponding switching delay is t1, The corresponding handover delay is t2.
  • the terminal device can determine that the handover delay corresponding to handover type b1 is t1, or the terminal device can also determine that the handover delay corresponding to handover type b1 is t3 (t3 is greater than t1) .
  • the radio frequency link of the terminal device is switched from frequency band A and frequency band B to frequency band A and from frequency band A to frequency band A and frequency band B.
  • the first indication information may include a handover delay list A1, and the handover delay list A1 includes six handover delays corresponding to six handover types.
  • the handover delay list A1 may include handover delay 1 corresponding to handover type b1, handover delay 2 corresponding to handover type b2,
  • the switching delay corresponding to switching type b3 is 3, the switching delay corresponding to switching type b4 is 4, the switching delay corresponding to switching type b5 is 5, and the switching delay corresponding to switching type b6 is 6.
  • the four frequency bands supported by the terminal device include frequency band A, frequency band B, frequency band C and frequency band D.
  • the handover types corresponding to other handovers are all handover type b1, therefore,
  • the handover delay of other handovers can be handover delay 1.
  • the network device can directly obtain the handover delays corresponding to different handover types, which is relatively simple to implement.
  • the first indication information may also include a handover delay reference value, and then the network device may determine six handover delays corresponding to the six handover types based on the handover delay reference value.
  • the handover delay reference value may also be called It is the switching delay base or other name.
  • the network device can determine the six handover delays according to the handover delay reference value in multiple ways.
  • each of the six handover delays can be predefined through a protocol.
  • the network device can determine six types of handover delays based on the correspondence between the handover delay reference value and the protocol definition.
  • switching delay 1 x1 * switching delay reference value
  • switching delay 2 x2 * switching delay reference value
  • switching delay 3 x3 * switching delay reference value
  • switching delay 4 x4*switching delay reference value
  • switching delay 5 x5*switching delay reference value
  • switching delay 6 x6*switching delay reference value; among them, x1, x2, x3, x4, x5, x6 can is a positive integer.
  • the first indication information can include the handover delay reference value without including six types of handover delays, signaling overhead can be effectively saved.
  • the first indication information may also include an identifier of at least one handover type supported by the terminal device.
  • the handover delays corresponding to the six handover types can be predefined through the protocol. Then, after the terminal device sends the first indication information to the network device, the network device can learn at least one handover type supported by the terminal device, and at least The handover delay corresponding to a handover type.
  • implementation mode 1.1 by dividing the switching supported by the radio frequency link of the terminal device into multiple switching types, and reporting the switching delays corresponding to different switching types to the network device, it is possible to effectively report the switching delay while Save signaling overhead.
  • the radio frequency link of the terminal equipment involves two frequency bands before and after the handover.
  • the terminal device can send parameters of at least one frequency band combination to the network device, and each frequency band combination in the at least one frequency band combination includes two frequency bands, each The parameters of the frequency band combination include the switching delay corresponding to the radio frequency link of the terminal equipment switching between the two frequency bands included in the frequency band combination (i.e., the switching delay corresponding to switching type b1 and the switching delay corresponding to switching type b2) .
  • At least one frequency band combination includes frequency band combination 1, and frequency band combination 1 includes frequency band A and frequency band B.
  • the parameters of frequency band combination 1 reported by the terminal device to the network device may include ⁇ X1, X2, X3, X4 ⁇ .
  • X1 represents the identifier of frequency band A
  • X2 represents the identifier of frequency band B
  • X4 represents the switching delay corresponding to switching type b2 (for example, 140us), where switching type b2 can include the switching between state 2 and state 3 of the radio frequency link of the terminal device. switch between.
  • the radio frequency link of the terminal device does not support switching type b2 (that is, switching between state 2 and state 3 in Table 1 is not supported), the value of X4 can be empty.
  • the radio frequency link of the terminal equipment involves at least three frequency bands before and after the handover.
  • the terminal device can send first indication information to the network device, and the first indication information indicates four handover delays corresponding to the four handover types.
  • the first indication information may include a switching delay list A2.
  • the switching delay list A2 includes four switching delays corresponding to the four switching types.
  • the switching delay list A2 may include a switching delay corresponding to the switching type b3. Delay 1, switching delay 3 corresponding to switching type b4, switching delay 5 corresponding to switching type b5, and switching delay 6 corresponding to switching type b6.
  • the first indication information may also include a handover delay reference value, and the network device may determine four handover delays corresponding to the four handover types based on the handover delay reference value.
  • the description in Implementation Mode 1.1 please refer to the description in Implementation Mode 1.1.
  • different reporting methods can be used depending on the number of frequency bands involved in the radio frequency link of the terminal device before and after the handover, thereby improving the flexibility of reporting the handover delay.
  • the radio frequency link of the terminal equipment involves two frequency bands before and after the handover
  • the handover delays corresponding to the two handover types under different frequency band combinations can be reported separately for different frequency band combinations, thereby improving the reported handover Delay accuracy.
  • the radio frequency link of the terminal device involves at least three frequency bands before and after handover, handover delays corresponding to different handover types can be reported, thus effectively saving signaling overhead.
  • the terminal device may also send other possible information to the network device.
  • the terminal device may also send second indication information to the network device; for another example, the terminal device may also send the second indication information to the network device.
  • the device sends third indication information or fourth indication information.
  • the first to fourth indication information may be carried in the same message (such as an RRC message), or may be carried in different messages, without any specific limitation.
  • the embodiment of the present application does not limit the order in which the terminal device sends the different messages.
  • the second instruction information is introduced below.
  • the second indication information includes identifiers of M frequency bands, identifiers of N frequency bands, and the first switching delay corresponding to switching of the radio frequency link of the terminal device from M frequency bands to N frequency bands.
  • M frequency bands and N frequency bands are all It belongs to multiple frequency bands supported by terminal equipment.
  • M and N are both integers greater than or equal to 1.
  • the switching type corresponding to the radio frequency link switching of the terminal device from M frequency bands to N frequency bands belongs to at least one switching type (in implementation 1.1, at least one switching type may include switching type a1 to switching type a6 or switching type Type b1 to handover type b6; in implementation 1.2, at least one handover type may include handover type b3 to handover type b6).
  • M frequency bands include frequency band A and frequency band B
  • N frequency bands include frequency band C and frequency band D.
  • the corresponding handover type is handover type b6.
  • the first The handover delay is different from the handover delay corresponding to the b6 handover type.
  • the handover type corresponding to the handover performed by the radio frequency link of the terminal equipment is handover type b6 (here, handover type b6 is taken as an example)
  • the handover performed by the radio frequency link of the terminal equipment The corresponding handover delay is the handover delay corresponding to handover type b6.
  • the handover delay corresponding to the special handover does not apply to the handover delay corresponding to the handover type to which the special handover belongs. Therefore, the terminal device can separately report the handover corresponding to each special handover to the network device through the second instruction information. time delay.
  • a possible special switching is: the radio frequency link of the terminal equipment switches from M frequency bands to N frequency bands, and the corresponding handover type of the terminal equipment's radio frequency link switches from M frequency bands to N frequency bands is handover type b6.
  • the switching delay corresponding to the radio frequency link of the terminal device switching from M frequency bands to N frequency bands is different from the switching delay corresponding to switching type b6.
  • the terminal device can send the second instruction information to the network device.
  • the second indication information indicates the handover delay corresponding to the special handover.
  • handover type b6 includes handover 1, handover 2, handover 3 and handover 4.
  • the handover delay corresponding to handover 1 is 35us
  • the handover delay corresponding to handover 1 is 70us
  • the handover delay corresponding to handover 3 The switching delay corresponding to switching 4 is 50us
  • the switching delay corresponding to switching 4 is 140us. Since the switching delay corresponding to switching 4 is significantly different from the switching delay corresponding to the other three switchings, the terminal device can determine the corresponding switching delay of switching type b6.
  • the switching delay is 70us
  • switch 4 is a special switch
  • the switching delay corresponding to switch 4 is reported separately.
  • Using this method can effectively improve the accuracy of the handover delay reported by the terminal device and avoid the waste of transmission resources between the network device and the terminal device due to the large handover delay corresponding to the handover type reported by the terminal device; for example, If the terminal device does not regard handover 4 as a special handover, but reports the handover delay corresponding to handover type b6 as 140us, when the radio frequency link of the terminal device performs handover 1, the actual handover delay is 35us, but the network device needs to wait. It takes 140us to communicate with the terminal device, which will cause a waste of transmission resources.
  • the second indication information indicating the switching delay corresponding to the switching of the radio frequency link of the terminal device from M frequency bands to N frequency bands.
  • the second indication information may also indicate Switching delays corresponding to other special switchings. That is to say, the second indication information may indicate the switching delay corresponding to at least one special switching.
  • the number of special switches indicated by the second indication information may be less than or equal to maxULTxSwitchingSpecialBandEntries, where maxULTxSwitchingSpecialBandEntries is a positive integer.
  • the value of maxULTxSwitchingSpecialBandEntries can be pre-agreed by the network device and the terminal device, or it can also be defined by the protocol, and is not specifically limited.
  • implementation mode 1.2 and the radio frequency link being a Tx radio frequency link are taken as an example to describe two possible signaling structures of the first indication information and the second indication information.
  • the first possible signaling structure is a first possible signaling structure:
  • the second possible signaling structure is a first possible signaling structure
  • the third instruction information and the fourth instruction information are introduced below.
  • the terminal device can also report to the network device the switching supported by the radio frequency link of the terminal device on multiple frequency bands, so that the network device can subsequently switch based on the terminal device's
  • the radio frequency link supports switching on multiple frequency bands to instruct the radio frequency link of the terminal device to perform corresponding switching. Two possible reporting methods are described below in conjunction with Example 1 and Example 2.
  • the terminal device may send third indication information to the network device.
  • the third indication information indicates multiple frequency bands supported by the terminal device.
  • the third indication information includes identifiers of multiple frequency bands supported by the terminal device.
  • the third indication information may implicitly indicate that the radio frequency link of the terminal device supports switching between all states corresponding to multiple frequency bands. In this way, by reporting multiple frequency bands supported by the terminal device, the switching of the radio frequency link supported by the terminal device on multiple frequency bands is implicitly indicated, which can effectively save signaling overhead. For example, if the multiple frequency bands supported by the terminal equipment include frequency band A, frequency band B, frequency band C, and frequency band D, then the radio frequency link of the terminal equipment supports switching between ten states corresponding to the four frequency bands.
  • Example 2 The terminal device may send third indication information and fourth indication information to the network device, the third indication information indicates multiple frequency bands supported by the terminal device, and the fourth indication information indicates at least one frequency band combination supported by the terminal device, such as the fourth
  • the indication information may include identification of frequency bands included in each of the at least one frequency band combination. It can be understood that, for implementation 1.1, each of the at least one frequency band combination indicated by the fourth indication information may include at least two frequency bands; for implementation 1.2, at least one frequency band combination indicated by the fourth indication information Each of the frequency band combinations may include at least three frequency bands.
  • each of the at least one frequency band combination may include at least three frequency bands among multiple frequency bands supported by the terminal device.
  • the multiple frequency bands supported by the terminal device include frequency band A, frequency band B, frequency band C, and frequency band D.
  • At least one frequency band combination includes frequency band combination 1, frequency band combination 2, and frequency band combination 3; wherein frequency band combination 1 includes frequency band A and frequency band B. and frequency band C.
  • the frequency band combination includes frequency band B, frequency band C and frequency band D.
  • Frequency band combination 3 includes frequency band A, frequency band B, frequency band C and frequency band D.
  • the fourth indication information implicitly indicates that the radio frequency link of the terminal device supports switching between the three frequency bands included in the frequency band combination 1, and indicates switching between the three frequency bands included in the frequency band combination 2, and also supports switching between the three frequency bands included in the frequency band combination 2. Switch between the four frequency bands included in Band Combination 3. In this way, by reporting the frequency band combination supported by the terminal device to implicitly indicate the switching supported by the radio frequency link of the terminal device on multiple frequency bands, signaling overhead can be effectively saved.
  • the terminal device may support at least one frequency band combination, and the first indication information may indicate at least one switching delay list corresponding to the at least one frequency band combination.
  • the terminal The device may report to the network device through the first indication information the switching delay corresponding to the switching of the radio frequency link of the terminal device between at least two frequency bands included in the frequency band combination.
  • the terminal device when the frequency band combination supported by the terminal device includes two frequency bands, the terminal device can report to the network device in the manner described in Figure 3 that the radio frequency link of the terminal device is in the two frequency bands included in the frequency band combination.
  • the switching delay corresponding to switching between at least three frequency bands In the following, based on the second scenario, two possible implementations will be described in combination with Implementation Mode 2.1 and Implementation Mode 2.2.
  • At least one frequency band combination supported by the terminal device includes the first frequency band combination
  • the first indication information may indicate the handover delay list B1 corresponding to the first frequency band combination
  • the handover delay list B1 includes at least one handover time.
  • the at least one switching delay corresponds to at least one switching type in which the radio frequency link of the terminal device switches between multiple frequency bands included in the first frequency band combination.
  • the first indication information may indicate the switching delay list B1 in a variety of ways.
  • the first indication information may include the identification of frequency bands included in the first frequency band combination and the switching delay list B1, or the first indication information may It may include identification of frequency bands included in the first frequency band combination and a switching delay reference value, and the switching delay in the switching delay list B1 may be determined based on the switching delay reference value.
  • the first indication information may also indicate a switching delay list B2, and the switching delay list B2 includes at least one switching delay, and at least one switching delay.
  • the switching delay may correspond to at least one switching type in which the radio frequency link of the terminal device switches between multiple frequency bands included in the second frequency band combination.
  • the first frequency band combination includes frequency band A, frequency band B, and frequency band C.
  • the radio frequency link switching of the terminal device between the three frequency bands included in the first frequency band combination includes switching type b3, switching type b4, and switching type b5.
  • the switching delay list B1 may include the switching delay 1a corresponding to the switching type b3, the switching delay 2a corresponding to the switching type b4, and the switching delay 3a corresponding to the switching type b5.
  • the second frequency band combination includes frequency band B, frequency band C and frequency band D.
  • the radio frequency link of the terminal device switches between the three frequency bands included in the second frequency band combination including handover type b3, handover type b4 and handover type b5. See the table
  • the switching delay list B2 may include the switching delay 1b corresponding to the switching type b3, the switching delay 2b corresponding to the switching type b4, and the switching delay 3b corresponding to the switching type b5.
  • Table 5 Examples of the second handover delay list and the third handover delay list
  • the switching delay 1a and the switching delay 1b may be the same, or may be different.
  • Handover delay 2a and handover delay 2b may be the same or may be different.
  • Handover delay 3a and handover delay 3b may be the same or may be different.
  • the following describes a possible signaling structure of the first indication information, taking the first indication information indicating switching delay list B1 and the radio frequency link being a Tx radio frequency link as an example.
  • the terminal equipment can separately report the handover delays corresponding to multiple handover types under different frequency band combinations, thereby improving the accuracy of the handover delays reported by the terminal equipment and saving signaling. overhead.
  • the first indication information may indicate the handover delay list C1 corresponding to the first frequency band combination, and the handover delay list C1 includes at least one handover time.
  • the first indication information may indicate the switching delay list C1 in various ways.
  • the first indication information may include the identification of frequency bands included in the first frequency band combination and the switching delay list C1.
  • the first frequency band combination includes frequency band A, frequency band B, and frequency band C.
  • the switching of the radio frequency link of the terminal device between the multiple frequency bands included in the first frequency band combination may include: Among them, with For example, It means that the radio frequency link of the terminal device is switched from frequency band A and frequency band B to frequency band C and from frequency band C to frequency band A and frequency band B.
  • handover delay list C1 may include The corresponding switching delay, The corresponding switching delay, The corresponding switching delay, The corresponding switching delay, The corresponding switching delay, The corresponding switching delay, The corresponding switching delay.
  • the terminal device can report the handover delays corresponding to different handovers respectively, thereby effectively improving the accuracy of the handover delay reported by the terminal device.
  • implementation mode 1 after the terminal device sends the first instruction information to the network device, it can also report to the network device separately (for example, through the third instruction information or the fourth instruction information). Instruction information is reported to the network device) switching supported by the radio frequency link of the terminal device on multiple frequency bands; and in implementation mode 2, since the first indication information can indicate at least one switching delay list corresponding to at least one frequency band combination, therefore, The network device can know at least one frequency band combination supported by the terminal device according to the first indication information, without the terminal device needing to separately report the switching supported by the radio frequency link of the terminal device.
  • the above focuses on describing the differences between different implementation methods. Except for other differences, different implementation methods can refer to each other.
  • S402 The terminal device and the network device communicate based on at least one switching delay among multiple switching delays.
  • the network device can learn the switching delays corresponding to different handover types. For example, the network device can learn that the radio frequency link of the terminal device switches from state 4 to state 4 in Table 2. 5 corresponding switching delay (such as 35us).
  • the radio frequency link of the terminal device is in state 4 in Table 2
  • the network device determines that it needs to switch the radio frequency link of the terminal device from state 4 to state 5 in Table 2, it can send switching information to the terminal device to switch The information is used to indicate that the radio frequency link of the terminal device switches from state 4 to state 5 in Table 2.
  • the network device can wait 35us before communicating with the terminal device. That is to say, the network device can communicate with the terminal device after time point T1+35us, and During the period from T1 to T1+35us, there is no need to communicate with the terminal device.
  • the embodiments of this application mainly take the Tx radio frequency link as an example for description, and the method described in the embodiments of this application can also be applied to the Rx radio frequency link.
  • the terminal equipment and the access network equipment may include corresponding hardware structures and/or software modules that perform each function.
  • the embodiments of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.
  • Embodiments of the present application can divide the terminal equipment and the access network equipment into functional units according to the above method examples.
  • each functional unit can be divided corresponding to each function, or two or more functions can be integrated into one unit.
  • the above integrated units can be implemented in the form of hardware or software functional units.
  • Figure 5 shows a possible exemplary block diagram of the device involved in the embodiment of the present application.
  • the device 500 may include: a processing unit 502 and a communication unit 503.
  • the processing unit 502 is used to control and manage the actions of the device 500 .
  • the communication unit 503 is used to support communication between the device 500 and other devices.
  • the communication unit 503 is also called a transceiver unit and may include a receiving unit and/or a sending unit, respectively configured to perform receiving and sending operations.
  • the device 500 may also include a storage unit 501 for storing program codes and/or data of the device 500 .
  • the device 500 may be the terminal device in the above embodiment.
  • the processing unit 502 can support the apparatus 500 to perform the actions of the terminal device in each of the above method examples.
  • the processing unit 502 mainly performs internal actions of the terminal device in the method example, and the communication unit 503 may support communication between the device 500 and other devices.
  • the communication unit 503 is configured to: send first indication information to the network device, where the first indication information indicates at least one switching delay, and the at least one switching delay corresponds to the radio frequency of the terminal device. At least one switching type in which a link switches between multiple frequency bands; further, the terminal device can communicate with the network device based on the at least one switching delay.
  • switching the radio frequency link of the terminal device between multiple frequency bands means that the radio frequency link of the terminal device involves switching of at least three frequency bands before and after the switching.
  • the multiple frequency bands are frequency bands supported by the terminal device; or, the multiple frequency bands are frequency bands included in one of multiple frequency band combinations supported by the terminal device. , wherein each of the plurality of frequency band combinations includes at least two frequency bands among the frequency bands supported by the terminal device.
  • the at least one switching type is determined based on at least one of the following: the frequency band before switching; the frequency band after switching; the number of frequency bands before switching; and the number of frequency bands after switching.
  • the at least one switching type includes one or more of the following: a first switching type, the number of frequency bands before switching corresponding to the first switching type is smaller than the number of frequency bands after switching, And the frequency band before switching and the frequency band after switching are completely different; the second switching type, the number of frequency bands before switching corresponding to the second switching type is greater than the number of frequency bands after switching, and the frequency band before switching and the frequency band after switching Completely different; the third switching type, the number of frequency bands before switching corresponding to the third switching type is equal to the number of frequency bands after switching, and the frequency bands before switching and the frequency bands after switching are completely different; the fourth switching type, the The number of frequency bands before switching corresponding to the fourth switching type is equal to the number of frequency bands after switching, and the frequency band before switching and the frequency band after switching include at least one same frequency band.
  • the first indication information includes the at least one handover delay; or the first indication information includes an identification of the at least one handover type; or the first indication
  • the information includes a switching delay reference value, the switching delay reference value being used to determine the at least one switching delay.
  • the communication unit 503 is also configured to send second indication information to the network device, where the second indication information includes identifiers of M frequency bands before switching and identifiers of N frequency bands after switching.
  • the first switching delay corresponding to the radio frequency link switching from the M frequency bands to the N frequency bands, M and N are both integers greater than or equal to 1; the radio frequency link switches from the M frequency bands to The switching type corresponding to the N frequency bands belongs to the at least one switching type, and the first switching delay is different from the switching delay corresponding to the switching type.
  • the device 500 may be the network device in the above embodiment.
  • the processing unit 502 can support the apparatus 500 to perform the actions of the network device in each of the above method examples.
  • the processing unit 502 mainly performs internal actions of the network device in the method example, and the communication unit 503 may support communication between the device 500 and other devices.
  • the communication unit 503 is configured to: receive first indication information from the terminal device, the first indication information indicating at least one switching delay, the at least one switching delay corresponding to the terminal device. At least one switching type in which a radio frequency link switches between multiple frequency bands; further, the network device can communicate with the terminal device based on the at least one switching delay.
  • the at least one switching type is determined based on at least one of the following: the frequency band before switching; the frequency band after switching; the number of frequency bands before switching; and the number of frequency bands after switching.
  • the at least one switching type includes one or more of the following: a first switching type, the number of frequency bands before switching corresponding to the first switching type is smaller than the number of frequency bands after switching, And the frequency band before switching and the frequency band after switching are completely different; the second switching type, the number of frequency bands before switching corresponding to the second switching type is greater than the number of frequency bands after switching, and the frequency band before switching and the frequency band after switching Completely different; the third switching type, the number of frequency bands before switching corresponding to the third switching type is equal to the number of frequency bands after switching, and the frequency bands before switching and the frequency bands after switching are completely different; the fourth switching type, the The number of frequency bands before switching corresponding to the fourth switching type is equal to the number of frequency bands after switching, and the frequency band before switching and the frequency band after switching include at least one same frequency band.
  • the first indication information includes the at least one handover delay; or the first indication information includes an identification of the at least one handover type; or the first indication
  • the information includes a switching delay reference value, the switching delay reference value being used to determine the at least one switching delay.
  • the communication unit 503 is also configured to: receive second indication information from the terminal device, where the second indication information includes the identifiers of the M frequency bands before switching, the identifiers of the N frequency bands before switching, The identifier and the first switching delay corresponding to the radio frequency link switching from the M frequency bands to the N frequency bands, M and N are both integers greater than or equal to 1; the radio frequency link switches from the M frequency bands to The switching type corresponding to the frequency band switching to the N frequency bands belongs to the to There is one less switching type, and the first switching delay is different from the switching delay corresponding to the switching type.
  • each unit in the device can be a separate processing element, or it can be integrated and implemented in a certain chip of the device.
  • it can also be stored in the memory in the form of a program, and a certain processing element of the device can call and execute the unit. Function.
  • all or part of these units can be integrated together or implemented independently.
  • the processing element described here can also be a processor, which can be an integrated circuit with signal processing capabilities.
  • each operation of the above method or each unit above can be implemented by an integrated logic circuit of hardware in the processor element or implemented in the form of software calling through the processing element.
  • the unit in any of the above devices may be one or more integrated circuits configured to implement the above method, such as: one or more application specific integrated circuits (ASIC), or one or Multiple microprocessors (digital signal processors, DSPs), or one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.
  • ASIC application specific integrated circuits
  • DSPs digital signal processors
  • FPGAs field programmable gate arrays
  • the unit in the device can be implemented in the form of a processing element scheduler
  • the processing element can be a processor, such as a general central processing unit (CPU), or other processors that can call programs.
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the above receiving unit is an interface circuit of the device and is used to receive signals from other devices.
  • the receiving unit is an interface circuit used by the chip to receive signals from other chips or devices.
  • the above unit used for sending is an interface circuit of the device and is used to send signals to other devices.
  • the sending unit is an interface circuit used by the chip to send signals to other chips or devices.
  • the terminal device can be applied in the communication system shown in Fig. 1 to implement the operations of the terminal device in the above embodiment.
  • the terminal device includes: an antenna 610, a radio frequency part 620, and a signal processing part 630.
  • the antenna 610 is connected to the radio frequency part 620.
  • the radio frequency part 620 receives the information sent by the network device through the antenna 610, and sends the information sent by the network device to the signal processing part 630 for processing.
  • the signal processing part 630 processes the information of the terminal device and sends it to the radio frequency part 620.
  • the radio frequency part 620 processes the information of the terminal device and sends it to the network device through the antenna 610.
  • the signal processing part 630 may include a modulation and demodulation subsystem for processing each communication protocol layer of the data; it may also include a central processing subsystem for processing the operating system and application layer of the terminal device; in addition, it may It includes other subsystems, such as multimedia subsystem, peripheral subsystem, etc.
  • the multimedia subsystem is used to control the camera, screen display, etc. of the terminal device, and the peripheral subsystem is used to realize the connection with other devices.
  • the modem subsystem can be a separately configured chip.
  • the modem subsystem may include one or more processing elements 631, including, for example, a host CPU and other integrated circuits.
  • the modem subsystem may also include a storage element 632 and an interface circuit 633.
  • the storage element 632 is used to store data and programs, but the program used to execute the method performed by the terminal device in the above method may not be stored in the storage element 632, but is stored in a memory outside the modem subsystem.
  • the modem subsystem is loaded and used when used.
  • Interface circuit 633 is used to communicate with other subsystems.
  • the modulation and demodulation subsystem can be implemented by a chip, which includes at least one processing element and an interface circuit, wherein the processing element is used to perform various steps of any method performed by the above terminal equipment, and the interface circuit is used to communicate with other devices.
  • the unit for the terminal device to implement each step in the above method can be implemented in the form of a processing element scheduler.
  • the device for the terminal device includes a processing element and a storage element, and the processing element calls a program stored in the storage element to Execute the method executed by the terminal device in the above method embodiment.
  • the storage element may be a storage element on the same chip as the processing element, that is, an on-chip storage element.
  • the program for executing the method performed by the terminal device in the above method may be in a storage element on a different chip from the processing element, that is, an off-chip storage element.
  • the processing element calls from the off-chip storage element or loads the program on the on-chip storage element to call and execute the method executed by the terminal device in the above method embodiment.
  • the unit of the terminal device that implements each step in the above method may be configured as one or more processing elements. These processing elements are provided on the modulation and demodulation subsystem.
  • the processing elements here may be integrated circuits. For example: one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.
  • the units of the terminal device that implement each step in the above method can be integrated together and implemented in the form of a SOC.
  • the SOC chip is used to implement the above method.
  • the chip can integrate at least one processing element and a storage element, and the processing element calls the stored program of the storage element to implement the above method executed by the terminal device; or, the chip can integrate at least one integrated circuit to implement the above terminal device.
  • the method of device execution; or, the above implementation methods can be combined, and the functions of some units are realized in the form of processing components calling programs, and the functions of some units are realized in the form of integrated circuits.
  • the above apparatus for a terminal device may include at least one processing element and an interface circuit, wherein at least one processing element is used to execute any method performed by the terminal device provided in the above method embodiments.
  • the processing element can execute part or all of the steps executed by the terminal device in the first way: that is, by calling the program stored in the storage element; or it can also use the second way: that is, by combining the instructions with the integrated logic circuit of the hardware in the processor element. method to perform part or all of the steps performed by the terminal device; of course, the first method and the second method may also be combined to perform part or all of the steps performed by the terminal device.
  • the processing elements here are the same as described above and can be implemented by a processor.
  • the functions of the processing elements can be the same as the functions of the processing unit described in FIG. 5 .
  • the processing element may be a general-purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above method, such as: one or more ASICs, or one or more microprocessors DSP , or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms.
  • the storage element can be implemented by a memory, and the function of the storage element can be the same as the function of the storage unit described in FIG. 5 .
  • the storage element can be one memory or a collective name for multiple memories.
  • the terminal device shown in Figure 6 can implement various processes involving the terminal device in the above method embodiment.
  • the operations and/or functions of each module in the terminal device shown in Figure 6 are respectively to implement the corresponding processes in the above method embodiment.
  • the access network device 70 may include one or more DUs 701 and one or more CUs 702.
  • the DU 701 may include at least one antenna 7011, at least one radio frequency unit 7012, at least one processor 7013 and at least one memory 7014.
  • the DU 701 part is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals. and some baseband processing.
  • CU 702 may include at least one processor 7022 and at least one memory 7021.
  • the CU 702 part is mainly used for baseband processing, controlling access network equipment, etc.
  • the DU 701 and the CU 702 can be physically set together or physically separated, that is, a distributed base station.
  • the CU 702 is the control center of the access network equipment, which can also be called a processing unit, and is mainly used to complete the baseband processing function.
  • the CU 702 can be used to control the access network device to perform the operation process of the access network device in the above method embodiment.
  • the access network device 70 may include one or more radio frequency units, one or more DUs and one or more CUs.
  • the DU may include at least one processor 7013 and at least one memory 7014
  • the radio frequency unit may include at least one antenna 7011 and at least one radio frequency unit 7012
  • the CU may include at least one processor 7022 and at least one memory 7021.
  • the CU702 can be composed of one or more single boards. Multiple single boards can jointly support a wireless access network (such as a 5G network) with a single access indication, or can respectively support wireless access networks of different access standards. Access network (such as LTE network, 5G network or other networks).
  • the memory 7021 and processor 7022 may serve one or more single boards. In other words, the memory and processor can be set independently on each board. It is also possible for multiple boards to share the same memory and processor. In addition, necessary circuits can also be installed on each board.
  • the DU701 can be composed of one or more single boards.
  • Multiple single boards can jointly support a wireless access network with a single access indication (such as a 5G network), or can separately support wireless access networks of different access standards (such as a 5G network).
  • the memory 7014 and processor 7013 may serve one or more single boards. In other words, the memory and processor can be set independently on each board. It is also possible for multiple boards to share the same memory and processor. In addition, necessary circuits can also be installed on each board.
  • the access network device shown in Figure 7 can implement various processes involving the access network device in the above method embodiment.
  • the operations and/or functions of each module in the access network equipment shown in Figure 7 are respectively intended to implement the corresponding processes in the above method embodiment.
  • system and “network” in the embodiments of this application may be used interchangeably.
  • “At least one” means one or more, and “plurality” means two or more.
  • “And/or” describes the relationship between associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist simultaneously, and B alone exists, where A, B can be singular or plural.
  • “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • “at least one of A, B, and C” includes A, B, C, AB, AC, BC, or ABC.
  • the ordinal numbers such as “first” and “second” mentioned in the embodiments of this application are used to distinguish multiple objects and are not used to limit the order, timing, priority or importance of multiple objects. degree.
  • embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions
  • the device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.
  • These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device.
  • Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande relève du domaine technique des communications et divulgue un procédé et un appareil de communication. Le procédé comprend les étapes suivantes : un dispositif terminal envoie des premières informations d'indication à un dispositif réseau, les premières informations d'indication indiquant au moins un délai de commutation, et le(s) délai(s) de commutation correspondant à au moins un type de commutation selon lequel une liaison radiofréquence du dispositif terminal est commutée entre une pluralité de bandes de fréquence ; et le dispositif terminal communique avec le dispositif réseau d'après le(s) délai(s) de commutation. En utilisant le procédé, le dispositif terminal peut rapporter au moins un délai de commutation au dispositif réseau, de façon à ce que le dispositif terminal et le dispositif réseau puissent communiquer d'après le(s) délai(s) de commutation ; de plus, le dispositif terminal peut rapporter des délais de commutation correspondant à différents types de commutation au dispositif réseau selon les types de commutation, de façon à ce que le surdébit de signalisation puisse être efficacement réduit tout en rapportant les délais de commutation.
PCT/CN2023/086680 2022-04-10 2023-04-06 Procédé et appareil de communication WO2023197936A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021077432A1 (fr) * 2019-10-26 2021-04-29 Qualcomm Incorporated Temps de préparation de transmission de liaison montante (ul tx)
CN113939020A (zh) * 2020-06-29 2022-01-14 华为技术有限公司 一种通信方法及装置
CN114006687A (zh) * 2021-01-05 2022-02-01 中国移动通信有限公司研究院 一种发送方法、上行控制方法、终端及网络侧设备
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CN113939020A (zh) * 2020-06-29 2022-01-14 华为技术有限公司 一种通信方法及装置
CN114095981A (zh) * 2020-08-24 2022-02-25 华为技术有限公司 一种小区状态切换方法及装置
CN114006687A (zh) * 2021-01-05 2022-02-01 中国移动通信有限公司研究院 一种发送方法、上行控制方法、终端及网络侧设备

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